@incollection{Juttler-Dietz-interpolation-quadric-surfaces-93,
  mrnumber = {MR1302205 (95g:65025)},
  author = {J{\"u}ttler, B. and Dietz, R.},
  mrclass = {65D17},
  booktitle = {Curves and surfaces in geometric design
               ({C}hamonix-{M}ont-{B}lanc, 1993)},
  address = {Wellesley, MA},
  title = {A geometrical approach to interpolation on quadric surfaces},
  publisher = {A K Peters},
  year = {1994},
  pages = {251--258},
}